@inproceedings{c273d85e3680449a9c03417f3c00c5ea,
title = "High-throughput QR decomposition for MIMO detection in OFDM systems",
abstract = "In this paper, we aim to design and implement a high-throughput QR decomposition architecture for 4 x 4 MIMO signal detection problems. A real-value decomposed MIMO system model is handled and thus the channel matrix to be processed is extended to the size 8x8. Instead of direct factorization, we propose a QR decomposition scheme by cascading one complex-value and one real-value Givens rotation blocks, which can save 44% hardware complexity. The systolic array is adopted for hardware implementation to facilitate pipeline design. Then, the requirement of skewed inputs to the conventional complex-value QR-decomposition systolic array is improved and 37% of delay elements are removed. The real-value Givens rotation stage is implemented by a stacked triangular systolic array to match with the throughput of the complex-value one. We have implemented the proposed design in 0.18 μm CMOS technology with 152K gates. From post-layout simulations, the maximum operating frequency can achieve 90.09MHz. The proposed scheme not only reduces the hardware complexity, but also supports high throughput for MIMO-OFDM signal detection up to 2.16 Gbps under stationary channels.",
author = "Huang, {Zheng Yu} and Tsai, {Pei Yun}",
year = "2010",
doi = "10.1109/ISCAS.2010.5537358",
language = "???core.languages.en_GB???",
isbn = "9781424453085",
series = "ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems",
pages = "1492--1495",
booktitle = "ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems",
note = "2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 ; Conference date: 30-05-2010 Through 02-06-2010",
}